Aortic StenosisNCT02628899
Feasibility of Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic, Severe Aortic Stenosis
A study testing Transfemoral TAVR and SAVR in people with Aortic Stenosis, run by Medstar Health Research Institute at 11 sites in United States.
Trial summary
To assess the safety and feasibility of Transcatheter Aortic Valve Replacement (TAVR) with commercially available bioprostheses in patients with severe, symptomatic aortic stenosis (AS) who are low-risk (STS score ≤3%) for surgical aortic valve replacement (SAVR). Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Aortic Stenosis
- What is being tested?
- Transfemoral TAVR and SAVR
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 277 participants
- Where
- 11 sitesUnited States
- Study dates
- Jan 2016to Jan 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Severe, degenerative AS, defined as:
- mean aortic valve gradient ≥40 mm Hg OR Vmax ≥4 m/sec AND
- calculated aortic valve area ≤1.0 cm2 OR aortic valve area index ≤0.6 cm2/m2
- Symptomatic AS, defined as a history of at least one of the following:
- dyspnea that qualifies at New York Heart Association (NYHA) class II or greater
- angina pectoris
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- cardiac syncope
- The Heart Team, including at least one cardiothoracic surgeon and one interventional cardiologist, deem the patient to be reasonable for transfemoral TAVR with a commercially available bioprosthetic valve
- The Heart Team agrees that the patient is low-risk, quantified by an estimated risk of ≤3% by the calculated STS score for operative mortality at 30 days; AND agrees that SAVR would be an appropriate therapy if offered.
- The Heart Team agrees that transfemoral TAVR is anatomically feasible, based upon multislice CT measurements
- Procedure status is elective
- Expected survival is at least 24 months
- For the bicuspid cohort only:
- Aortic Stenosis of a bicuspid aortic valve
Who cannot join
- Concomitant disease of another heart valve or the aorta that requires either transcatheter or surgical intervention
- Any condition that is considered a contraindication for placement of a bioprosthetic aortic valve (e.g. patient requires a mechanical aortic valve)
- Aortic stenosis secondary to a bicuspid aortic valve (except for the bicuspid valve cohort)
- Prior bioprosthetic surgical aortic valve replacement
- Mechanical heart valve in another position
- End-stage renal disease requiring hemodialysis or peritoneal dialysis, or a creatinine clearance <20 cc/min
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- Left ventricular ejection fraction <20%
- Recent (<6 months) history of stroke or transient ischemic attack
- Symptomatic carotid or vertebral artery disease, or recent (<6 weeks) surgical or endovascular treatment of carotid stenosis
- Any contraindication to oral antiplatelet or anticoagulation therapy following the procedure, including recent or ongoing bleeding, or HASBLED score >3
- Severe coronary artery disease that is unrevascularized
- Recent (<30 days) acute myocardial infarction
- Patient cannot undergo transfemoral TAVR for anatomic reasons (as determined by supplemental imaging studies); this would include inadequate size of iliofemoral access vessels or an aortic annulus size that is not accommodated by the commercially available valves
- Any comorbidity not captured by the STS score that would make SAVR high risk, as determined by a cardiothoracic surgeon who is a member of the heart team; this includes:
- porcelain or severely atherosclerotic aorta
- frailty
- hostile chest
- IMA or other conduit either crosses midline of sternum or is adherent to sternum
- severe pulmonary hypertension (PA systolic pressure > 2/3 of systemic pressure)
- severe right ventricular dysfunction
- Ongoing sepsis or infective endocarditis
- Recent (<30 days) or ongoing bleeding that would preclude treatment with anticoagulant or antiplatelet therapy, including recent gastrointestinal bleeding
- Uncontrolled atrial fibrillation (resting heart rate >120 beats per minute)
- Severe chronic obstructive pulmonary disease, as demonstrated by forced expiratory volume (FEV1) <750 cc
- Liver failure with Childs class C or D
- Pre-procedure shock, inotropes, mechanical assist device, or cardiac arrest
- Pregnancy or intent to become pregnant prior to completion of all protocol follow-up procedures
- Known allergy to warfarin or aspirin
Trial locations and contacts
11 sites in 1 country.
11 sites in 1 country
United States11 sites
WellStar Kennestone Hospital
Marietta, Georgia, 30060
Maine Medical Center
Portland, Maine, 04102
Miriam Hospital
Providence, Rhode Island, 02906
Henrico Doctors' Hospital
Richmond, Virginia, 23229
VCU Medical Center
Richmond, Virginia, 23298
The Valley Hospital
Ridgewood, New Jersey, 07450
Sutter Health System
Sacramento, California, 95816
Foundation for Cardiovascular Medicine
San Diego, California, 92121
Stony Brook Hospital
Stony Brook, New York, 11794
St. John Health System
Tulsa, Oklahoma, 74104
MedStar Washington Hospital Center
Washington D.C., District of Columbia, 20010
About this study
To assess the safety and feasibility of Transcatheter Aortic Valve Replacement (TAVR) with commercially available bioprostheses in patients with severe, symptomatic aortic stenosis (AS) who are low-risk (STS score ≤3%) for surgical aortic valve replacement (SAVR).
Read the detailed description
Trial Objectives: To assess the safety and feasibility of Transcatheter Aortic Valve Replacement (TAVR) with commercially available bioprostheses in patients with severe, symptomatic aortic stenosis (AS) who are low-risk (STS score ≤3%) for surgical aortic valve replacement (SAVR).
Methodology: This is a multicenter, prospective trial of TAVR in low-risk patients at up to twelve sites in the United States. The trial will have three arms. The first will comprise 200 patients undergoing transfemoral TAVR. The second arm will comprise200 closely matched historical controls who underwent isolated bioprosthetic SAVR.
Historical controls will be selected from among patients at the same site who have undergone isolated bioprosthetic SAVR within the previous 36 months. TAVR patients will then be matched to SAVR patients using STS database variables to perform propensity matching, including (but not limited to) age, gender, race, ethnicity, STS score, and valve prosthesis size. Once the historical matched controls are identified, detailed chart review will abstract in-hospital and 30-day outcomes for the SAVR cohort.
The third arm of the trial will comprise a registry of TAVR in up to 100 low-risk patients with bicuspid aortic valve. The results from the registry arm will be analyzed independently.
Primary Efficacy Endpoint: All-cause mortality at 30 days following transfemoral TAVR vs. bioprosthetic SAVR.
Primary Safety Endpoint: Defined as the composite of major adverse events at 30 days:
- all-cause mortality c. spontaneous myocardial infarction (MI) d. reintervention: defined as any cardiac surgery or percutaneous reintervention that repairs, alters, or replaces a previously implanted aortic valve e. VARC life-threatening bleeding f. Increase in serum creatinine to ≥300% (>3x increase compared to baseline) OR serum creatinine ≥4.0 mg/dL with an acute increase ≥0.5 mg/dL OR new requirement for dialysis g. coronary artery obstruction requiring percutaneous or surgical intervention h. VARC major vascular complication i. cardiac tamponade j. cardiac perforation k. pericarditis l. mediastinitis m. hemolysis n. infective endocarditis o. moderate or severe aortic insufficiency p. significant aortic stenosis q. permanent pacemaker implantation r. new-onset atrial fibrillation
Secondary Endpoints (TAVR Cohort):
- Major adverse cardiovascular and cerebrovascular events (MACCE) at 30 days, 6 months, 12 months, and 2, 3, 4 and 5 years, defined as the composite of:
- all-cause mortality
- stroke
- spontaneous MI
- reintervention
- The occurrence of the individual components of MACCE at 30 days, 6 months, 12 months, and 2, 3, 4, and 5 years (including stoke).
- The composite of major adverse device events post-procedure, and at 6 months, 1 year, and 2, 3, 4, 5 years
- VARC major vascular complications, at 30 days and 1 year
- VARC life-threatening or disabling bleeding, at 30 days and 1 year
- Technical success upon exit from the operating room or catheterization laboratory, defined as all of the following:
- alive
- successful access, delivery, and retrieval of the device and/or delivery system
- correct positioning and successful deployment of the valve
- no need for unplanned or emergency surgery or reintervention related to the device or access procedure, including reinstitution of cardiopulmonary bypass post-weaning for SAVR patients
- Device success at 30 days and 1 year, defined as all of the following:
- absence of procedural mortality
- correct positioning of a single prosthetic heart valve in the proper anatomical location
- device performing as intended:
- No migration, erosion, embolization, detachment, fracture, hemolysis requiring transfusion, thrombosis, or endocarditis 2. Intended performance of the heart valve: no prosthesis-patient mismatch, mean aortic valve gradient <20 mm Hg OR peak velocity <3 m/s, AND no moderate or severe bioprosthetic valve regurgitation 8. Procedural success at 30 days, defined as device success AND no major adverse device events 9. Bioprosthetic valve regurgitation, defined as either moderate or severe aortic regurgitation OR moderate or severe paravalvular leak, at hospital discharge, 12 months, and 2, 3, 4, and 5 years 10. Incidence of new-onset atrial fibrillation at hospital discharge, and at 30 days, 12 months, and 2, 3, 4, and 5 years.
- Conduction disturbance requiring permanent pacemaker implantation at hospital discharge, 12 months, and 2, 3, 4, and 5 years.
- Change in NYHA class from baseline to 30 days, baseline to 6 months, baseline to 12 months, and baseline to 2-5 years.
- Change in distance walked during 6-minute walk test from baseline to 12 months.
- Change in responses to the short form Kansas City Cardiomyopathy Questionnaire (KCCQ-12) from baseline to 12 months.
- Echocardiographic assessment of the bioprosthetic valve post-procedure, at 12 months, and at years 2-5, including (but not limited to):
- aortic valve mean gradient, maximum gradient, and peak velocity b. calculated aortic valve area c. degree of bioprosthetic valve regurgitation 16. Assessment for subclinical leaflet thrombosis with multislice computed tomography, or transesophageal echocardiography if GFR <50 mL/min/m2, at 1 to 2 months.
- Individual patient level Success all of the following and device success:
- No re-hospitalizations or re-interventions for the underlying condition (e.g., HF)
- Return to prior living arrangement (or equivalent)
- Improvement vs. baseline in symptoms (NYHA Class decrease ≥ 1)
- Improvement vs. baseline in functional status (6MWT increase ≥ 50 meters)
- Improvement vs. baseline in QoL (KCCQ increase ≥ 10)
Number of Trial Sites: 12
Sample Size: 200 consecutive patients and 200 historical controls, and an additional 100 (up to) patients with bicuspid aortic valve
Patient Population: Patients with severe, symptomatic AS who are determined by the Heart Team to be at low surgical risk (STS score ≤3%).
- Conditions
- Aortic Stenosis
- Being tested
- Transfemoral TAVR, SAVR
- Medical subject headings
- Aortic Valve Stenosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Transfemoral TAVRDevice
Also called Transcatheter aortic valve replacement
SAVRDevice
Also called Surgical Aortic Valve Replacement
| Study group | Role | What they receive |
|---|---|---|
| Prospective TAVR Arm | Other | 200 patients prospectively undergoing transfemoral TAVR Receives: Device: Transfemoral TAVR |
| Historical SAVR Controls | Other | Historical controls will be selected from among patients at the same site who have undergone isolated bioprosthetic SAVR within the previous 36 months. TAVR patients will then be matched to SAVR patients using STS database variables to perform propensity matching, including (but not limited to) age, gender, race, ethnicity, STS score, and valve prosthesis size. Receives: Device: SAVR |
| Low-Risk TAVR with Bicuspid Aortic Valve | Other | The third arm of the trial will comprise a registry of TAVR in up to 100 low-risk patients with bicuspid aortic valve. The results from the registry arm will be analyzed independently. Receives: Device: Transfemoral TAVR |
What is being measured
The primary outcome is the main question the study is designed to answer.
All-cause mortality at 30 days following transfemoral TACR vs. bioprosthetic SAVR
All-cause mortality at 30 days following transfemoral TACR vs. bioprosthetic SAVR
Measured: 30 days following transfemoral TAVR vs. bioprosthetic SAVR
Composite of major adverse events at 30 days
Composite of major adverse events at 30 days
- all-cause mortality
- stroke
- spontaneous myocardial infarction (MI)
- reintervention: defined as any cardiac surgery or percutaneous reintervention that repairs, alters, or replaces a previously implanted aortic valve
- VARC life-threatening bleeding
- Increase in serum creatinine to ≥300% (>3x increase compared to baseline) OR serum creatinine ≥4.0 mg/dL with an acute increase ≥0.5 mg/dL OR new requirement for dialysis
- coronary artery obstruction requiring percutaneous or surgical intervention
- VARC major vascular complication
- cardiac tamponade
- cardiac perforation
- pericarditis
- mediastinitis
- hemolysis
- infective endocarditis
- moderate or severe aortic insufficiency
- significant aortic stenosis
- permanent pacemaker implantation
Measured: 30 days
All Cause Mortality
Measured: 30 days
All Stroke (disabling and non-disabling, ischemic and hemorrhagic
Measured: 30 Days
Life Threatening and Major Bleeding
Measured: 30 days
Major Vascular Complications
Measured: 30 days
Hospitalizations for valve-related symptoms or worsening congestive heart failure
Measured: 30 days
Secondary outcomes (2)
composite of all-cause mortality, stroke, spontaneous MI, re-intervention
composite of:
- all-cause mortality
- stroke
- spontaneous MI
- re-intervention 2. The occurrence of the individual components of MACCE at 30 days, 6 months, 12 months, and 2, 3, 4, and 5 years. 3. The composite of major adverse device events post-procedure, and at 6 months, 1 year, and 2, 3, 4, 5 years 4. VARC major vascular complications, at 30 days and 1 year 5. VARC life-threatening or disabling bleeding, at 30 days and 1 year 6. Assessment for subclinical leaflet thrombosis with multislice computed tomography, or transesophageal echocardiography if GFR <50 mL/min/m2, at 1 to 2 months.
Measured: 30 days, 6 months, 12 months, and 2,3,4 and 5 years
VARC - 2 Device Success
Absence of procedural mortality AND Correct positioning of a single prosthetic heart valve into the proper anatomical location AND Intended performance of the prosthetic heart valve (no prosthesis-patient mismatch and mean aortic valve gradient<20 mm Hg or peak velocity<3 m/s, AND no moderate or severe prosthetic valve regurgitation)
Measured: 30 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Dec 2015 (estimated)
- Study startJan 2016
- Primary completionJan 2023
- Study completionJan 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for Aortic StenosisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 277 participants (actual)
Sponsor and investigators
- Lead sponsor
- Medstar Health Research Institute
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02628899
- Sponsor's protocol ID
- Low Risk TAVR
- Status last verified
- May 2024
- First submitted
- 4 Dec 2015
- Last updated
- 16 May 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
Publications
Waksman R, Rogers T, Torguson R, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Asch F, Weissman G, Ben-Dor I, Shults C, Bastian R, Craig PE, Garcia-Garcia HM, Kolm P, Zou Q, Satler LF, Corso PJ. Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic Severe Aortic Stenosis. J Am Coll Cardiol. 2018 Oct 30;72(18):2095-2105. doi: 10.1016/j.jacc.2018.08.1033. Epub 2018 Aug 28.
PubMed 30170075Waksman R, Corso PJ, Torguson R, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Buchbinder M, Asch F, Weissman G, Ben-Dor I, Shults C, Bastian R, Craig PE, Ali S, Garcia-Garcia HM, Kolm P, Zou Q, Satler LF, Rogers T. TAVR in Low-Risk Patients: 1-Year Results From the LRT Trial. JACC Cardiovasc Interv. 2019 May 27;12(10):901-907. doi: 10.1016/j.jcin.2019.03.002. Epub 2019 Mar 12.
PubMed 30860059Khan JM, Rogers T, Waksman R, Torguson R, Weissman G, Medvedofsky D, Craig PE, Zhang C, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Shults C, Garcia-Garcia HM, Kolm P, Satler LF, Buchbinder M, Ben-Dor I, Asch FM. Hemodynamics and Subclinical Leaflet Thrombosis in Low-Risk Patients Undergoing Transcatheter Aortic Valve Replacement. Circ Cardiovasc Imaging. 2019 Dec;12(12):e009608. doi: 10.1161/CIRCIMAGING.119.009608. Epub 2019 Dec 12.
PubMed 31826675Rogers T, Torguson R, Bastian R, Corso P, Waksman R. Feasibility of transcatheter aortic valve replacement in low-risk patients with symptomatic severe aortic stenosis: Rationale and design of the Low Risk TAVR (LRT) study. Am Heart J. 2017 Jul;189:103-109. doi: 10.1016/j.ahj.2017.03.008. Epub 2017 Mar 14.
PubMed 28625366Reddy P, Rodriguez-Weisson FJ, Medranda GA, Merdler I, Cellamare M, Gordon P, Ehsan A, Parikh P, Bilfinger T, Buchbinder M, Roberts D, Hanna N, Ben-Dor I, Satler LF, Garcia-Garcia HM, Asch FM, Weissman G, Sadeghpour A, Schults CC, Waksman R, Rogers T. Impact of Calcified Raphe on TAVR in Bicuspid Patients: Predicting Redo-TAVR Feasibility and Virtual Planning Implications. Circ Cardiovasc Interv. 2025 Jun;18(6):e014802. doi: 10.1161/CIRCINTERVENTIONS.124.014802. Epub 2025 Apr 22.
PubMed 40260550Bhogal S, Waksman R, Shea C, Zhang C, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Weissman G, Ben-Dor I, Shults CC, Ali S, Garcia-Garcia HM, Satler LF, Rogers T. Self-expanding and balloon-expandable valves in low risk TAVR patients. Int J Cardiol. 2024 Jan 15;395:131431. doi: 10.1016/j.ijcard.2023.131431. Epub 2023 Oct 12.
PubMed 37832606Waksman R, Bhogal S, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Kim FY, Weissman G, Ben-Dor I, Shults CC, Ali S, Sutton JA, Shea C, Zhang C, Garcia-Garcia HM, Satler LF, Rogers T. Transcatheter Aortic Valve Replacement and Impact of Subclinical Leaflet Thrombosis in Low-Risk Patients: LRT Trial 4-Year Outcomes. Circ Cardiovasc Interv. 2023 May;16(5):e012655. doi: 10.1161/CIRCINTERVENTIONS.122.012655. Epub 2023 May 16.
PubMed 37192308Medranda GA, Soria Jimenez CE, Torguson R, Case BC, Forrestal BJ, Ali SW, Shea C, Zhang C, Wang JC, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Weissman G, Shults CC, Garcia-Garcia HM, Ben-Dor I, Satler LF, Waksman R, Rogers T. Lifetime management of patients with symptomatic severe aortic stenosis: a computed tomography simulation study. EuroIntervention. 2022 Aug 5;18(5):e407-e416. doi: 10.4244/EIJ-D-21-01091.
PubMed 35321859Medranda GA, Rogers T, Forrestal BJ, Case BC, Yerasi C, Chezar-Azerrad C, Shults CC, Torguson R, Shea C, Parikh P, Bilfinger T, Cocke T, Brizzio ME, Levitt R, Hahn C, Hanna N, Comas G, Mahoney P, Newton J, Buchbinder M, Zhang C, Craig PE, Weigold WG, Asch FM, Weissman G, Garcia-Garcia HM, Ben-Dor I, Satler LF, Waksman R. Balloon-Expandable Valve Geometry After Transcatheter Aortic Valve Replacement in Low-Risk Patients With Bicuspid Versus Tricuspid Aortic Stenosis. Cardiovasc Revasc Med. 2021 Dec;33:7-12. doi: 10.1016/j.carrev.2021.03.027. Epub 2021 Apr 6.
PubMed 34078581Waksman R, Torguson R, Medranda GA, Shea C, Zhang C, Gordon P, Ehsan A, Wilson SR, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Buchbinder M, Asch F, Weissman G, Ben-Dor I, Shults C, Garcia-Garcia HM, Satler LF, Rogers T. Transcatheter aortic valve replacement in low-risk patients: 2-year results from the LRT trial. Am Heart J. 2021 Jul;237:25-33. doi: 10.1016/j.ahj.2021.03.006. Epub 2021 Mar 10.
PubMed 33713618Khan JM, Rogers T, Weissman G, Torguson R, Rodriguez-Weisson FJ, Chezar-Azerrad C, Greenspun B, Gupta N, Medvedofsky D, Zhang C, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Shults C, Buchbinder M, Garcia-Garcia HM, Kolm P, Satler LF, Hashim H, Ben-Dor I, Asch FM, Waksman R. Anatomical Characteristics Associated With Hypoattenuated Leaflet Thickening in Low-Risk Patients Undergoing Transcatheter Aortic Valve Replacement. Cardiovasc Revasc Med. 2021 Jun;27:1-6. doi: 10.1016/j.carrev.2020.09.034. Epub 2020 Sep 25.
PubMed 33129688Waksman R, Craig PE, Torguson R, Asch FM, Weissman G, Ruiz D, Gordon P, Ehsan A, Parikh P, Bilfinger T, Levitt R, Hahn C, Roberts D, Ingram M, Hanna N, Comas G, Zhang C, Ben-Dor I, Satler LF, Garcia-Garcia HM, Shults C, Rogers T. Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic Severe Bicuspid Aortic Valve Stenosis. JACC Cardiovasc Interv. 2020 May 11;13(9):1019-1027. doi: 10.1016/j.jcin.2020.02.008. Epub 2020 Feb 24.
PubMed 32381181Ozaki Y, Garcia-Garcia HM, Rogers T, Torguson R, Craig PE, Hideo-Kajita A, Gordon P, Ehsan A, Parikh P, Bilfinger T, Butzel D, Buchanan S, Levitt R, Hahn C, Buchbinder M, Hanna N, Garrett R, Wilson SR, Goncalves JA, Ali S, Asch FM, Weissman G, Shults C, Ben-Dor I, Satler LF, Waksman R. Coronary Artery Disease Assessed by Computed Tomography-Based Leaman Score in Patients With Low-Risk Transcatheter Aortic Valve Implantation. Am J Cardiol. 2020 Apr 15;125(8):1216-1221. doi: 10.1016/j.amjcard.2020.01.022. Epub 2020 Jan 28.
PubMed 32087995
Study at a glance
From the registry record, last updated by the sponsor on 16 May 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Feasibility of Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic, Severe Aortic Stenosis
- ClinicalTrials.gov ID
- NCT02628899
- Acronym / sponsor ID
- Low Risk TAVR
- Conditions
- Aortic Stenosis
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 277 participants (actual)
- Lead sponsor
- Medstar Health Research InstituteUniversity, hospital or other
- Study start
- Jan 2016 (actual)
- Primary completion
- Jan 2023 (actual)
- Study completion
- Jan 2023 (actual)
- First posted
- 11 Dec 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To assess the safety and feasibility of Transcatheter Aortic Valve Replacement (TAVR) with commercially available bioprostheses in patients with severe, symptomatic aortic stenosis (AS) who are low-risk (STS score ≤3%) for surgical aortic valve replacement (SAVR).
Detailed description
Trial Objectives: To assess the safety and feasibility of Transcatheter Aortic Valve Replacement (TAVR) with commercially available bioprostheses in patients with severe, symptomatic aortic stenosis (AS) who are low-risk (STS score ≤3%) for surgical aortic valve replacement (SAVR).
Methodology: This is a multicenter, prospective trial of TAVR in low-risk patients at up to twelve sites in the United States. The trial will have three arms. The first will comprise 200 patients undergoing transfemoral TAVR. The second arm will comprise200 closely matched historical controls who underwent isolated bioprosthetic SAVR.
Historical controls will be selected from among patients at the same site who have undergone isolated bioprosthetic SAVR within the previous 36 months. TAVR patients will then be matched to SAVR patients using STS database variables to perform propensity matching, including (but not limited to) age, gender, race, ethnicity, STS score, and valve prosthesis size. Once the historical matched controls are identified, detailed chart review will abstract in-hospital and 30-day outcomes for the SAVR cohort.
The third arm of the trial will comprise a registry of TAVR in up to 100 low-risk patients with bicuspid aortic valve. The results from the registry arm will be analyzed independently.
Primary Efficacy Endpoint: All-cause mortality at 30 days following transfemoral TAVR vs. bioprosthetic SAVR.
Primary Safety Endpoint: Defined as the composite of major adverse events at 30 days:
- all-cause mortality c. spontaneous myocardial infarction (MI) d. reintervention: defined as any cardiac surgery or percutaneous reintervention that repairs, alters, or replaces a previously implanted aortic valve e. VARC life-threatening bleeding f. Increase in serum creatinine to ≥300% (>3x increase compared to baseline) OR serum creatinine ≥4.0 mg/dL with an acute increase ≥0.5 mg/dL OR new requirement for dialysis g. coronary artery obstruction requiring percutaneous or surgical intervention h. VARC major vascular complication i. cardiac tamponade j. cardiac perforation k. pericarditis l. mediastinitis m. hemolysis n. infective endocarditis o. moderate or severe aortic insufficiency p. significant aortic stenosis q. permanent pacemaker implantation r. new-onset atrial fibrillation
Secondary Endpoints (TAVR Cohort):
- Major adverse cardiovascular and cerebrovascular events (MACCE) at 30 days, 6 months, 12 months, and 2, 3, 4 and 5 years, defined as the composite of:
- all-cause mortality
- stroke
- spontaneous MI
- reintervention
- The occurrence of the individual components of MACCE at 30 days, 6 months, 12 months, and 2, 3, 4, and 5 years (including stoke).
- The composite of major adverse device events post-procedure, and at 6 months, 1 year, and 2, 3, 4, 5 years
- VARC major vascular complications, at 30 days and 1 year
- VARC life-threatening or disabling bleeding, at 30 days and 1 year
- Technical success upon exit from the operating room or catheterization laboratory, defined as all of the following:
- alive
- successful access, delivery, and retrieval of the device and/or delivery system
- correct positioning and successful deployment of the valve
- no need for unplanned or emergency surgery or reintervention related to the device or access procedure, including reinstitution of cardiopulmonary bypass post-weaning for SAVR patients
- Device success at 30 days and 1 year, defined as all of the following:
- absence of procedural mortality
- correct positioning of a single prosthetic heart valve in the proper anatomical location
- device performing as intended:
- No migration, erosion, embolization, detachment, fracture, hemolysis requiring transfusion, thrombosis, or endocarditis 2. Intended performance of the heart valve: no prosthesis-patient mismatch, mean aortic valve gradient <20 mm Hg OR peak velocity <3 m/s, AND no moderate or severe bioprosthetic valve regurgitation 8. Procedural success at 30 days, defined as device success AND no major adverse device events 9. Bioprosthetic valve regurgitation, defined as either moderate or severe aortic regurgitation OR moderate or severe paravalvular leak, at hospital discharge, 12 months, and 2, 3, 4, and 5 years 10. Incidence of new-onset atrial fibrillation at hospital discharge, and at 30 days, 12 months, and 2, 3, 4, and 5 years.
- Conduction disturbance requiring permanent pacemaker implantation at hospital discharge, 12 months, and 2, 3, 4, and 5 years.
- Change in NYHA class from baseline to 30 days, baseline to 6 months, baseline to 12 months, and baseline to 2-5 years.
- Change in distance walked during 6-minute walk test from baseline to 12 months.
- Change in responses to the short form Kansas City Cardiomyopathy Questionnaire (KCCQ-12) from baseline to 12 months.
- Echocardiographic assessment of the bioprosthetic valve post-procedure, at 12 months, and at years 2-5, including (but not limited to):
- aortic valve mean gradient, maximum gradient, and peak velocity b. calculated aortic valve area c. degree of bioprosthetic valve regurgitation 16. Assessment for subclinical leaflet thrombosis with multislice computed tomography, or transesophageal echocardiography if GFR <50 mL/min/m2, at 1 to 2 months.
- Individual patient level Success all of the following and device success:
- No re-hospitalizations or re-interventions for the underlying condition (e.g., HF)
- Return to prior living arrangement (or equivalent)
- Improvement vs. baseline in symptoms (NYHA Class decrease ≥ 1)
- Improvement vs. baseline in functional status (6MWT increase ≥ 50 meters)
- Improvement vs. baseline in QoL (KCCQ increase ≥ 10)
Number of Trial Sites: 12
Sample Size: 200 consecutive patients and 200 historical controls, and an additional 100 (up to) patients with bicuspid aortic valve
Patient Population: Patients with severe, symptomatic AS who are determined by the Heart Team to be at low surgical risk (STS score ≤3%).
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Prospective TAVR Arm | Other | Device: Transfemoral TAVR200 patients prospectively undergoing transfemoral TAVR |
| Historical SAVR Controls | Other | Device: SAVRHistorical controls will be selected from among patients at the same site who have undergone isolated bioprosthetic SAVR within the previous 36 months. TAVR patients will then be matched to SAVR patients using STS database variables to perform propensity matching, including (but not limited to) age, gender, race, ethnicity, STS score, and valve prosthesis size. |
| Low-Risk TAVR with Bicuspid Aortic Valve | Other | Device: Transfemoral TAVRThe third arm of the trial will comprise a registry of TAVR in up to 100 low-risk patients with bicuspid aortic valve. The results from the registry arm will be analyzed independently. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (14 listed)
- Severe, degenerative AS, defined as:
- Symptomatic AS, defined as a history of at least one of the following:
- The Heart Team, including at least one cardiothoracic surgeon and one interventional cardiologist, deem the patient to be reasonable for transfemoral TAVR with a commercially available bioprosthetic valve
- The Heart Team agrees that the patient is low-risk, quantified by an estimated risk of ≤3% by the calculated STS score for operative mortality at 30 days; AND agrees that SAVR would be an appropriate therapy if offered.
- The Heart Team agrees that transfemoral TAVR is anatomically feasible, based upon multislice CT measurements
Key exclusion criteria (28 listed)
- Concomitant disease of another heart valve or the aorta that requires either transcatheter or surgical intervention
- Any condition that is considered a contraindication for placement of a bioprosthetic aortic valve (e.g. patient requires a mechanical aortic valve)
- Aortic stenosis secondary to a bicuspid aortic valve (except for the bicuspid valve cohort)
- Prior bioprosthetic surgical aortic valve replacement
- Mechanical heart valve in another position
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Transfemoral TAVRAlso: Transcatheter aortic valve replacement | Device | Low-Risk TAVR with Bicuspid Aortic Valve, Prospective TAVR Arm |
| SAVRAlso: Surgical Aortic Valve Replacement | Device | Historical SAVR Controls |
Primary outcome
All-cause mortality at 30 days following transfemoral TACR vs. bioprosthetic SAVR
Time frame: 30 days following transfemoral TAVR vs. bioprosthetic SAVR
All-cause mortality at 30 days following transfemoral TACR vs. bioprosthetic SAVR
Composite of major adverse events at 30 days
Time frame: 30 days
Composite of major adverse events at 30 days 1. all-cause mortality 2. stroke 3. spontaneous myocardial infarction (MI) 4. reintervention: defined as any cardiac surgery or percutaneous reintervention that repairs, alters, or replaces a previously implanted aortic valve 5. VARC life-threatening bleeding 6. Increase in serum creatinine to ≥300% (>3x increase compared to baseline) OR serum creatinine ≥4.0 mg/dL with an acute increase ≥0.5 mg/dL OR new requirement for dialysis 7. coronary artery obstruction requiring percutaneous or surgical intervention 8. VARC major vascular complication 9. cardiac tamponade 10. cardiac perforation 11. pericarditis 12. mediastinitis 13. hemolysis 14. infective endocarditis 15. moderate or severe aortic insufficiency 16. significant aortic stenosis 17. permanent pacemaker implantation
All Cause Mortality
Time frame: 30 days
All Stroke (disabling and non-disabling, ischemic and hemorrhagic
Time frame: 30 Days
Life Threatening and Major Bleeding
Time frame: 30 days
Major Vascular Complications
Time frame: 30 days
Hospitalizations for valve-related symptoms or worsening congestive heart failure
Time frame: 30 days
2 secondary outcomes
composite of all-cause mortality, stroke, spontaneous MI, re-intervention
Time frame: 30 days, 6 months, 12 months, and 2,3,4 and 5 years
VARC - 2 Device Success
Time frame: 30 days
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 May 2024.
- Background: PubMed 30170075Waksman R, Rogers T, Torguson R, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Asch F, Weissman G, Ben-Dor I, Shults C, Bastian R, Craig PE, Garcia-Garcia HM, Kolm P, Zou Q, Satler LF, Corso PJ. Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic Severe Aortic Stenosis. J Am Coll Cardiol. 2018 Oct 30;72(18):2095-2105. doi: 10.1016/j.jacc.2018.08.1033. Epub 2018 Aug 28.
- Background: PubMed 30860059Waksman R, Corso PJ, Torguson R, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Buchbinder M, Asch F, Weissman G, Ben-Dor I, Shults C, Bastian R, Craig PE, Ali S, Garcia-Garcia HM, Kolm P, Zou Q, Satler LF, Rogers T. TAVR in Low-Risk Patients: 1-Year Results From the LRT Trial. JACC Cardiovasc Interv. 2019 May 27;12(10):901-907. doi: 10.1016/j.jcin.2019.03.002. Epub 2019 Mar 12.
- Background: PubMed 31826675Khan JM, Rogers T, Waksman R, Torguson R, Weissman G, Medvedofsky D, Craig PE, Zhang C, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Shults C, Garcia-Garcia HM, Kolm P, Satler LF, Buchbinder M, Ben-Dor I, Asch FM. Hemodynamics and Subclinical Leaflet Thrombosis in Low-Risk Patients Undergoing Transcatheter Aortic Valve Replacement. Circ Cardiovasc Imaging. 2019 Dec;12(12):e009608. doi: 10.1161/CIRCIMAGING.119.009608. Epub 2019 Dec 12.
- Background: PubMed 28625366Rogers T, Torguson R, Bastian R, Corso P, Waksman R. Feasibility of transcatheter aortic valve replacement in low-risk patients with symptomatic severe aortic stenosis: Rationale and design of the Low Risk TAVR (LRT) study. Am Heart J. 2017 Jul;189:103-109. doi: 10.1016/j.ahj.2017.03.008. Epub 2017 Mar 14.
- Derived from this study: PubMed 40260550Reddy P, Rodriguez-Weisson FJ, Medranda GA, Merdler I, Cellamare M, Gordon P, Ehsan A, Parikh P, Bilfinger T, Buchbinder M, Roberts D, Hanna N, Ben-Dor I, Satler LF, Garcia-Garcia HM, Asch FM, Weissman G, Sadeghpour A, Schults CC, Waksman R, Rogers T. Impact of Calcified Raphe on TAVR in Bicuspid Patients: Predicting Redo-TAVR Feasibility and Virtual Planning Implications. Circ Cardiovasc Interv. 2025 Jun;18(6):e014802. doi: 10.1161/CIRCINTERVENTIONS.124.014802. Epub 2025 Apr 22.
- Derived from this study: PubMed 37832606Bhogal S, Waksman R, Shea C, Zhang C, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Weissman G, Ben-Dor I, Shults CC, Ali S, Garcia-Garcia HM, Satler LF, Rogers T. Self-expanding and balloon-expandable valves in low risk TAVR patients. Int J Cardiol. 2024 Jan 15;395:131431. doi: 10.1016/j.ijcard.2023.131431. Epub 2023 Oct 12.
- Derived from this study: PubMed 37192308Waksman R, Bhogal S, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Kim FY, Weissman G, Ben-Dor I, Shults CC, Ali S, Sutton JA, Shea C, Zhang C, Garcia-Garcia HM, Satler LF, Rogers T. Transcatheter Aortic Valve Replacement and Impact of Subclinical Leaflet Thrombosis in Low-Risk Patients: LRT Trial 4-Year Outcomes. Circ Cardiovasc Interv. 2023 May;16(5):e012655. doi: 10.1161/CIRCINTERVENTIONS.122.012655. Epub 2023 May 16.
- Derived from this study: PubMed 35321859Medranda GA, Soria Jimenez CE, Torguson R, Case BC, Forrestal BJ, Ali SW, Shea C, Zhang C, Wang JC, Gordon P, Ehsan A, Wilson SR, Levitt R, Parikh P, Bilfinger T, Hanna N, Buchbinder M, Asch FM, Weissman G, Shults CC, Garcia-Garcia HM, Ben-Dor I, Satler LF, Waksman R, Rogers T. Lifetime management of patients with symptomatic severe aortic stenosis: a computed tomography simulation study. EuroIntervention. 2022 Aug 5;18(5):e407-e416. doi: 10.4244/EIJ-D-21-01091.
- Derived from this study: PubMed 34078581Medranda GA, Rogers T, Forrestal BJ, Case BC, Yerasi C, Chezar-Azerrad C, Shults CC, Torguson R, Shea C, Parikh P, Bilfinger T, Cocke T, Brizzio ME, Levitt R, Hahn C, Hanna N, Comas G, Mahoney P, Newton J, Buchbinder M, Zhang C, Craig PE, Weigold WG, Asch FM, Weissman G, Garcia-Garcia HM, Ben-Dor I, Satler LF, Waksman R. Balloon-Expandable Valve Geometry After Transcatheter Aortic Valve Replacement in Low-Risk Patients With Bicuspid Versus Tricuspid Aortic Stenosis. Cardiovasc Revasc Med. 2021 Dec;33:7-12. doi: 10.1016/j.carrev.2021.03.027. Epub 2021 Apr 6.
- Derived from this study: PubMed 33713618Waksman R, Torguson R, Medranda GA, Shea C, Zhang C, Gordon P, Ehsan A, Wilson SR, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Buchbinder M, Asch F, Weissman G, Ben-Dor I, Shults C, Garcia-Garcia HM, Satler LF, Rogers T. Transcatheter aortic valve replacement in low-risk patients: 2-year results from the LRT trial. Am Heart J. 2021 Jul;237:25-33. doi: 10.1016/j.ahj.2021.03.006. Epub 2021 Mar 10.
- Derived from this study: PubMed 33129688Khan JM, Rogers T, Weissman G, Torguson R, Rodriguez-Weisson FJ, Chezar-Azerrad C, Greenspun B, Gupta N, Medvedofsky D, Zhang C, Gordon P, Ehsan A, Wilson SR, Goncalves J, Levitt R, Hahn C, Parikh P, Bilfinger T, Butzel D, Buchanan S, Hanna N, Garrett R, Shults C, Buchbinder M, Garcia-Garcia HM, Kolm P, Satler LF, Hashim H, Ben-Dor I, Asch FM, Waksman R. Anatomical Characteristics Associated With Hypoattenuated Leaflet Thickening in Low-Risk Patients Undergoing Transcatheter Aortic Valve Replacement. Cardiovasc Revasc Med. 2021 Jun;27:1-6. doi: 10.1016/j.carrev.2020.09.034. Epub 2020 Sep 25.
- Derived from this study: PubMed 32381181Waksman R, Craig PE, Torguson R, Asch FM, Weissman G, Ruiz D, Gordon P, Ehsan A, Parikh P, Bilfinger T, Levitt R, Hahn C, Roberts D, Ingram M, Hanna N, Comas G, Zhang C, Ben-Dor I, Satler LF, Garcia-Garcia HM, Shults C, Rogers T. Transcatheter Aortic Valve Replacement in Low-Risk Patients With Symptomatic Severe Bicuspid Aortic Valve Stenosis. JACC Cardiovasc Interv. 2020 May 11;13(9):1019-1027. doi: 10.1016/j.jcin.2020.02.008. Epub 2020 Feb 24.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
11 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Transfemoral TAVR and SAVR in people with Aortic Stenosis, run by Medstar Health Research Institute at 11 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 14 inclusion and 28 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 16 May 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 11 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
All-cause mortality at 30 days following transfemoral TACR vs. bioprosthetic SAVR (time frame: 30 days following transfemoral TAVR vs. bioprosthetic SAVR). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02628899, which also lists 13 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 May 2024.